639-61-2
2-hydroxy-2,2-bis(4-methoxyphenyl)acetic acid
→
6636-69-7
2-(1-methylpiperidin-1-ium-1-yl)ethyl 2-hydroxy-2,2-bis(4-methoxyphenyl)acetate,bromide
1932-03-2
1-(2-氯乙基)哌啶